These are the raw space-to-ground files. The naming convention is:

"0000000262_SYNC_SG_1_2013-04-14_10_45_31.wav"

The first number ("0000000262") is the file’s catalog number on the PAO audio recorder, and not applicable to content of the file.

The textual label ("SYNC_SG_1") describes the content of the file, where SG is Space-to-Ground.

The numbers in the end of the file name are the date and time. "2013-04-14" is the date; "10_45_31" is the time, in Hours:Minutes:Seconds format. All dates and times are Central Time.

All audio digitized, cataloged and archived by the Houston Audio Control Room, at the NASA Johnson Space Center.